Question

Which logical fallacy is used in the text?
Mr. Shepherd argues that we need to do more to prevent workplace injuries and fatalities. I doubt that someone so socially awkward would know a thing about office safety.
A. ad hominem: a personal attack against one's opponent
B. appeal to nature: the assumption that natural things are always good
C. hasty generalization: a very bad broad claim based on very little evidence

Answer 1

A. ad hominem.

The speaker attacks Mr. Shepherd's social awkwardness instead of addressing the substance of his argument about workplace safety — a personal attack irrelevant to the issue.